You, a car accident investigation expert, are assigned a case where the insurance company suspects that the car company did not properly account for the fatigue failure when designing the axle of their car. You are given a sample of a broken front-right axle to determine if the axle failure was a fatigue failure. You were told that the axle broke when the car traveling at 45 mph hit a pothole in the road. How will you most efficiently determine if the failure caused was a fatigue failure or the pothole effect? You are only given the broken axle.?

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w